Electric-hammer.



H. F. WHALTON.

Patented Feb. 21, 1911.

2 SHEETSSHEET 1.

FILE

@vwmtoz Wi t messes H. F. WHALTON. ELECTRIC HAMMER.

APPLICATION FILED MAY 26, 1910 Patented Feb. 21, 1911.

2 SHEETSSHEET 2.

HILARY F. WHALTON, OF KEY WEST, FLORIDA.

ELECTRIC HAMMER.

Specification of Letters Patent.

Patented Feb. 21, 1911.

Application filed May 26. 1910. Serial No. 563.625.

To a?! whom. it may concern:

Be it known that I. l'lILAltY F. "ni un'ox, a citizen of the United States. residing a sataof Florida. have invented certain new and useful Improvements in Electric llamvmers: and I do hcrebt declare the following to be a full clear, and exact description of the invention. such as will enable others 10 skilled in the art to which it appertains to make and use the same.

This invention relates to electric hann mers; and it consists in the novel construction and combination of the parts hereina after fully described and claimed.

In the drawings. Figure l is a side view of the hammer with the. front of the. casing; removed. Fig. 2 is a front view of the electromagnets showing the.reversing devices.

Kev 'est. in the county of Monroe and Fig. 3 is a'plan view taken in sectionon the line m;v in Fig. 2. Fig. *l is a diagram of the electrical connections. w

A is an inclosing case of any convenient. size and material. 25, B are two stationary electroniagnets secured to the bottom of the case.

C are two slidable lectrom'agnets secured together and arranged over the electromagnets B. Th electromagnetsC have guidebarsc secured to them which are slidablc vertically in guides of secured -to the sides 0 the case. v I

D is the hammer shaft which is secured to the slidablc electromagnets C and which projects through a'guidc-hole d in the bot tom of the case. A. cylinder E is secured in the case around the hammershaft, and c is a collar on the said hammer shaft which strikes the upper end of the cylinder E and 0 thereby prevents the opposed faces of the. cores of the electromagncts from striking each other. The electromagnets C the hamtrier-shaft D, and thcguide-bars n, are all sccured'to a l"shaped crosshead DC The electromagnets of each pair-"are secure-d closo adjacent to each other to the arms of the crosshead. and the hammer-shattD is secured to the stem of the crosshead, to one side of and between the centers of the elec- 0 tro'magnetsn lnthis manner'the whole de- .vice can beinclose'd in a small case which v is square in cross-section. The guide-bars '0 are secured at the opposite. ends of the stem of the. T-sha ped crosshead. A spring e is 5 arranged within thocylindcr E between the l l l l l l l i l l l collar and the bottom of the case. and this spring normally holds the slidableelectro-f magnets and the hammer shaft in their raised positions.

l are insulated contact-pieces secured to the case. and f are insulated contact-pieces carried by the electromagnets C- and bearing against the contact-pieces F. The contactpieces are preferably formed of carbon, and are held in contact with each other by springs f. The. contact-pieces f and their springs are preferably carried by cylinders I secured to the slidable electromagnets.

(l is an adjustable resistance of any approved make inclosed within the casing and arranged in circuit with the elcctromagncts. A lever or finger-piece g is provided for varying the resistance.

The automatic reversing devices shown in Fig. 2. H is a tappetsecured to the slidablc electronia, rnets. and h is a slidable ta ppet-bar provided with projections h at its ends for the tappet H to engage with. The tappet-bar h is provided with guidebars 5 which are slidable vertically in guides. i secured to the case A. I is an insulated contact-piece secured to the case. and J is' i an insulated contact-lever pivoted to the case by a pin j and provided with a contact-piece 7" arranged to bear against. the contactpiece I. These contact-pieces are prefer ablv formed of carbon. A stop K is provided on the case to prevent the contact.- picce j 'from being moved too far away from the contact-piece I. n p

L is a lever pivoted to the case by a pin m. One end of this lever is pivotally connected by a pin m to an arm n. on the tappet-barfis and the other end of the lever Iris provided with a cylinderN. I

P is an insulated piston which is slidable in the cylinder N, and 7) is a wheel journaled in a projecting end portion of the piston P, and bearing against the contact-lever J. A spring 7; is arranged'inside the cylinder N and presses the piston P o'utwardly.-

R is a finger-piece connected to the tappetbar 7: and projecting-from the case; soas to atl'ord a means for startinqsthe 'reversing mechanism by hand. r f" S is a switch for starting and stopping th'c hammer by turning the current on and off.

'l is the-hammer-hcadwhich is secured to Heads of various weight and size may be secured to the hammer shaft according to the use to which the hammer is to be put.

The current asses fromthe line wire 1, through the switch and the wire 2 .to the resistance G, and thence by wire 3 through the contact-pieces I and y to the lever J. The lever J is connected with the'slidable electromagnets C by a wire 4, one pair of contact-pieces F and f being included in the wire-4. The current passes from the slidable electromagnets C to the stationary electromagnets l t by a wire 5, the other pair of .contact-pieces F and f being included in the wire 5. The stationary electromaguetsrli are connected with the other line wire 0 so that the circuit is complete when the switch S is closed and the contact pieces l and j touch each other.

The tappet Hsecured to the slidablc elect'roma nets makes and breaks thecircuit automaticall as long as current is supplied, 4 and the hammer shaft; is reciproeated by the slidable electromagncts' The pairs of contact-pleces F and f may tion.

This hammer is used for all uses to' which hammers of this sort are put, and is found to be simple in construction, and cfiicient in action.

Vhat I claim 15:

l. in an electric han'nner, th'e' conibinaA tion, with a case. and a pair of stationary clectromagncts secured therein close adjacent to each other; of guides secured to the case. a T-shaped crosshead, guide-bars secured to the ends of the stem of the crosshcad and slidable in the said guides, a pair of clcctromagnets secured to tl arms of thc cros hcad over the stationary electromagncts, a lntnnncr-shat't secured to the stem of the crosshc'ad to one side of the electromagncts, a spring which normally holds the pairs of clcctromagncts apart, and electric connections for energizing the. electromagncts.

2. ln an electric lnnnuu-r,thc combination, with a case, and a pair of electromagnc'ts secured at-one end portion ot the case; of guides secured to the case, a pair of electromagncts slidable in the said guides at the and projecting from the case past the stationary electromagnets and provided with a collar, a cylinder for said collar to strike against secured to the case around the hammer shaft, a spring arranged in the said cylinder between the case and the collar and normally holding the electromagnets apart, and electric connections for energizing the said elcctromagnets.

"thin an electric hannner, the combinacured to the case; of an elm-tromagnet slidable in the case and provided with a hammer shaft, a tappet secured to the slidablc electromagnct, a slidable tappet-bar carried by the case'and operated by the said tappct. a lever pivoted to the case amt pivotally c(nt ncctcd at one end with the said tappet-bar, a contact-lever pivoted to the case and proridcd with a'contact-picce and opcratively connected -with the other end portion of the said lever, a stationary contact-piece secured to the case. and electric connections between the line wires including the said contactpieccs and electronnagncts in the circuit.

4. ln an electric hammer, the combination. with a case. and an clectroniagnct 'sccurcd in.thc cast-pot" an clectromagnct slidable in thccase and provided with a hammcr shaft, a tappct secured to the. slidable electromagnet, a slidable tappet-bar'carried by the case and operated by the said tappct,

provided atits other end with a cylinder, :1 spring-presstul piston .slidablc in the said cylinder and provided with a wheel at its free end. a coutactlc\'cr pivoted to the case and provided withacontact-piece and arranged in operative cngagcmcnt with the said whccl, a stationary contact-piece sccured to thc casc.-and electric connections 2 between the lincwircsincluding the said culltuct-pit'tfcs and cha-tromagncts in the circuit.

in testimony, whcrcotl have aliixcd my signature in the presence of two witnc scs. HILARY l. \\'lli\l"l().\'.

Witnesses:

'nns'rnu .li. lttssnnr. l. lf. PAGE.

tioh, with a case, and an elcctromagnet scalever pivoted to the case and pivotally conncctcd-at one end to the said tappct-bar and 

